Paper bag



4 Sheets-Sheet i.

D. APPEL.v

(Model.)

PAPER BAG.

Patented lll --.153: 1.1- lill .nlnllllu l. IaHIlwlll 4r Sheets-Sheet 2..Di APPEL.

(Model.)

PAPER BAG.

No. 388,614. Patented Aug.28, 1838.

(Model.) 4 sheets-sheet 3.'

D. APPEL.4

PAPBR'BAG. l No.'388,1614. Patented Aug. 28, 1888.`

(Model.) 4 Sheets-Sheet 4.

A D. APPEL.

PAPER BAG. 8 4 No. 388,614. Patented Aug. 28, 1888.

N Firms. Phmwmhogmplwr. wamlngtumnc NITED STATES PATENT Ormes.

DANIEL APPEL, OF CLEVELAND, OHIO, ASSIGNOR TO THE UNION PAPER BAGMACHINE COMPANY, OF PHILADELPHIA, PENNSYLVANIA.

PAPER-BAG.

SPECIFICATION formingI part of Letters Patent No. 388,614, dated August28, 1888.V

Application filed October 8, 1886. Serial No.215,(72. (Model.)

To all whom it may concern.-

Be it known that I, DANIEL APPEL, a citizen of the United States,residing at Cleveland, county of Cuyahoga, and State of Ohio, haveinvented certain new and useful Improvements in Paper Bags, fully describedand represented in the following specification and the accompanyingdrawings forming a part of the same.

` This invention relates, generally, to what are known in the art asbellows sided squarebottom bags, and it relates particularly to themanner of forming the bottoms thereof.

This class of bags, as most commonly formed, are made from a continuousiiat tube having inwardly-folded or bellows sides, which tube is severedinto lengths to provide bag lengths or blanks, which latter have one endpasted and folded upon itself to form the bag-bottom. Such bag lengthsor blanks are, however, in some instances formed from sheets of suitabledimensions, which are folded into flat tubular form with theinwardly-folded or bellows sides and then pasted and folded in themanner just described to provide the bottom.

It is well known to those using this class of paper bags that in orderto prepare a bag for the reception of the substance or article it is tohold, the bottom thereof has to be formed into rectangular orsubstantially-rectangular shape by passing one hand into the mouth ofthe bag and pressing the inner or central fold of the bellows sidesoutwardly at a point near the bottom of the bag, so as to cause thatportion of the bellows sides adjacent to the bottom at the inside of thebag to fold upon diagonal lines starting from the bottom and extendingin opposite directions diagonally upward to the outside folds of thebellows sides. At the same time the material will also be bent at rightangles across the bellows fold of each `side at the points at which saiddiagonal folds meet the outer folds of the bellows, and thus maketriangular portions formed ol' the bellows sides which will lie upon thebottom of the bag at its inside, causing said bellows sides to bedistended or straightened out so as to bring the bottom into rectangularform.

The object of the present invention is to so form the bottoms of thisclass of paper bags that no hand manipulation of the bag will berequired to cause its bottom to take the dcsired rectangular form.

To this end the invention consists in the novel construction of thebag-bottom now to be particularly described, reference being had to theaccompanying drawings`,illustrating the same, in which- Figure lrepresents a view of a blank of suitable shape to form a bag accordingto the present invention, the dotted lines indicating the lines uponwhich it is folded into tubular form with inwardly-folded or bellowssides, and also the lines upon which the blank is folded in theformation of the bottom. Fig. 2 is a side view of the same when foldedinto tubular form with inwardly-folded or bellows sides. Fig. 3 is an.edge view of the same showing the first step in the formation of thebottom, and Fig. 4 is a cross-sectional elevation taken on the line wmofFig. 3. Fig. 5 is a view similar to Fig. 3, illustrating another step inthe formation of the bottom, Fig. 6 being a side view of the same, andFig. 7 a cross-sectional elevation taken on the line x w of Fig. 5.Figs. 8, 9, l0, and l1 are views similar to Figs. 5 and 6, showing stillfurther steps in the formation of the bottom. Fig. 12 is a side view ofthe bag with its bottom completed, Fig. 13 being a central section ofthe same taken on the line y y, and Fig. 14 a perspective view lookingat the bottom of the bag when it is opened and distended. Figs. 15 and16 are respectively side and edge views illustrating a step in theformation of a modilied form of bottom, while Figs. 17 and 18 are`respectively a side view and a central section (the latter taken onthe'line xx of the former) showing the completed bag-bottoni.

The bellows-sided tube in the manufacture of this class of bags isformed of asingle piece of paper or other material by any of thewellknown methods-such, for instance, as that illustrated in LettersPatent No. 138,844C,dated May 13,1873--from which tube ablank or baglength, as seen in Fig. 2, is severed in the usual manner, so that oneof the plies-the under one in this instance-will extend slightly beyondthe other. Bags,however, may beformed` from detached sheets or blankswhich have" been previously cut to the proper form, as illustrated inFig. 1; and in order to aid in a more ready understanding of the mannerin which this invention is carried out it will be assumed in the presentcase that such ablank is employed. This sheet or blank is of rectangularor substantially of rectangular form, and is provided at itsbottom-forming end with a centrally-projecting lip, 20, said blank beingof suitable dimensions to form a bag of the desired size andproportions. The blank thus formed is first folded inward on the linesa, then outward on the lines b, and then inward again upon the lines c,thus bringing its edges together over the center of the blank, wherethey overlap and are united by a suitable line oll paste.

in Fig. 2. Preliminary to this folding operation, however, to aid in theproper formation of the bottom, the bottoni-forming end of the blank,Fig. 1, may be provided with acreased line, d, extending entirely acrossthe blank and with the creased lines e andf, which eX- tend from theopposite edges ofthe blank to the linesb d, respectively, and also withthe short creased lines g, 7L, i, and Z, arranged angularly between thecreased lines c c and cf, which creased lines define the lines uponwhich the paper or other material is folded in the operation of formingthe bag-bottom. Y

As the construction of the bag-bottom will be best understood bydescribing one way in which the tubular blank may be folded to form thesame, such description will now be given, it being understood that thesteps hereinafter described and the order in which they are taken may bedeparted from or varied so long as the construction ofthe bag is notchanged, without departing from the invention.

The bottom-forming end of the tubular bagblank, Fig. 2, will have itsupper ply, 10, turned upwardly on the line e, thus opening the bottomofthe blank and distending the sides 11 12 ot' the bellows folds at thatend in the manner shown in Figs. 3 and 4, during which time the underply of the blank may be held down by pressure upon its lip 20. Thisoperation will cause each of the sides 11 to bend slightly outward onthe diagonal lines g and each of the sides 12 on the diagonal lines i,Figs. 6 and 9. In this position of the blank (pressure upon the lipbeing removed) the portion 13 of the upper ply between the lines e andd, and the sides 11 between the line e and the diagonal line g, will befolded down on said line e, so that the portion 13 will lie upon thebody of the blank. This is effected by folding each of the triangularportions 18 of the bellows-folded sides formed by the diagonal lines f/i and line d outwardly and down on said diagonal lines g i from theposition shown in Fig. 4 to that shown in Fig. 7, so that saidtriangular portions 18 will lie upon the triangular portions 17 and uponthe portions 16 of the bellows folds. In so doing the portion 14 of theupper ply, the

This reduces the blank toV the forni of the bellows-sided tube bestshownv portion 15 of the under ply, and each of the sides 11 12 of thebellows folds between the line d and the end of the blank will be causedto bend upwardly upon said line d at right angles to the body of theblank and assume the rectangular shape shown in Figs. 5 and 6. The sides11 12 of the bellows folds are now bent inwardly toward, the center ofthe partiallyfo1|ned bottom, (drawing with them the portions 14 l5 ofthe upper and lower plies of the blank, respcclively,) as seen in Figs.8 and 9, so that the triangular portions 19 of the bellows folds formedby the diagonal lines ZL Z and line Z will be folded down on the line d,so as to overlie the triangular portions 18, before referred to. Theportion 14 is then folded down toward the center ofthepartially- 'formedbag-boltom on the line (Z, so as to fold the triangular pieces 2l of thesides 11, formed by the diagonal line l1., the fold-line c, and the edgeof the blank, down on said diagonal line h upon one-half of thetriangular portions 19, and thus the folded-down portion 14 willcentrally overlie the portion 13 land at each side overlie thetriangular pieces 2l. A flap,7,extending from thelinefoftheupperply, andsimilar liaps, 9, extending from the same line on each of the sides 11of the bellows folds,will thereupon be caused to turn upward, as shownin Fig 10. rIheportion 15 of the uuder ply of the blank will besimilarly folded down toward the center ofthe partially-formedbag-bottom on the line d, so as to fold the triangular pieces 22 of thesides 12, formed by the diagonal line Z, the fold-line a, and the edgeof the blank, down on the said line Z upon the remaining onefhalf of thetriangular portions 18, and thus the folded-down portion 15 will overliea portion of the body of the blank and the triangular pieces 22, so thatits projecting lip 2O and the flaps 8 of the triangular pieces 22 (eachhaving had a suitable line of paste applied to it) will overlie theflaps 7 and 9, as in Figs. 10ran'd 11, and upon being pressed down ontothe portion 14, inA contact with each other, will become united, andthus complete the formation of the bagbottom, as seen in Figs. 12 and13.

The lip 20, it is to be observed, will be of such size as to extendbeyond the fiaps 10 and 9, so as to become united with the portion 14,as is shown in Fig. 13. The flaps 7 and 9 may, however, be omitted byremoving those portions of the blank, Fig. 1, bounded by the edge of theblank and the dotted lines b and f, in which ease the edge of thetriangular pieces 22, their flaps 8, and the projecting lip 2() wouldlie directly in contact with the portion 14, as is obvious.

In the modification shown in Figs. 15 to 18, inclusive, the blank, Fig.1, will be provided with short incisions extending from o to won each ofthe fold-lines c, so as to render the projecting lip 20 free down to thedotted lines f,- and it should be here observed that the dotted linesf,so far as indicating lines ofthe ultimate folding of the blank, will beomitted2 IOO IIO

with the exception of that extending between the lines a (or theincision i; w) to the lines b. This blank, modied in this particular,may be folded in the same manner as that rst described, with theexception that the flaps 8, together with the iaps 9 and 7, instead ofbeing folded down, (on the line f,) so as to overlie the portion 14,will be directed in the opposite direction, (see Fig. 16,) so that saidflaps 8 will be folded down on the line f, so as to overlie thetriangular pieces 22, and said iiaps, together W-ith the flaps 9 and 7,tucked under the portion 15, so that said portion with its lip 20 will'overlie the portion 14, which former, having had a line of paste appliedto its under surface, will become united to said portion 14, and thuscomplete the formation ofthe bag, as shown in Figs. 17 and 18.

From the foregoing it will be seen that the distinguishing features ofthe bag herein described consist ofthe two similar triangular portions,18 19, folded down upon each other upon the lines d, which constitutetheir common base and define the side edges of the rectangular bottom.The fold-lines, which define the rectangular bottom and' the triangularportions 19, lying on said bottom, which in the old style of bagreferred to were formed in opening the bag for use, are in the presentconstruction fully defined and properly placed in the making ofthe bag.i

What is claimed is- A bellows-sided bag having a rectangular bottoniclosed by a single transverse seam, and having the triangular portions18 19 lying inside said bottom, substantially as described.

In testimony whereof I have hereunto set my hand in the presenceof twosubscribing witnesses.

DANIEL APPEL. /Vitnesses:

J. A. HovEY, T. H. PALMER.

